First slide

Dispersion

Question

The refractive indices of violet and red light are 1.54 and 1.52 respectively. If the angle of prism is 10°, then the angular dispersion is

Moderate

A

0.02
B

0.2
C

3.06
D

30.6

Solution

$δ = (μ_{v} - μ_{r}) A = 0 .02 \times 10 = 0 .2$

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